全文获取类型
收费全文 | 14048篇 |
免费 | 386篇 |
专业分类
财政金融 | 2335篇 |
工业经济 | 1143篇 |
计划管理 | 2316篇 |
经济学 | 2955篇 |
综合类 | 140篇 |
运输经济 | 107篇 |
旅游经济 | 232篇 |
贸易经济 | 2409篇 |
农业经济 | 717篇 |
经济概况 | 2073篇 |
信息产业经济 | 2篇 |
邮电经济 | 5篇 |
出版年
2023年 | 82篇 |
2021年 | 79篇 |
2020年 | 172篇 |
2019年 | 235篇 |
2018年 | 271篇 |
2017年 | 302篇 |
2016年 | 284篇 |
2015年 | 208篇 |
2014年 | 344篇 |
2013年 | 1623篇 |
2012年 | 415篇 |
2011年 | 543篇 |
2010年 | 380篇 |
2009年 | 440篇 |
2008年 | 432篇 |
2007年 | 421篇 |
2006年 | 446篇 |
2005年 | 388篇 |
2004年 | 360篇 |
2003年 | 381篇 |
2002年 | 362篇 |
2001年 | 302篇 |
2000年 | 279篇 |
1999年 | 258篇 |
1998年 | 274篇 |
1997年 | 260篇 |
1996年 | 237篇 |
1995年 | 202篇 |
1994年 | 178篇 |
1993年 | 222篇 |
1992年 | 202篇 |
1991年 | 191篇 |
1990年 | 169篇 |
1989年 | 153篇 |
1988年 | 152篇 |
1987年 | 127篇 |
1986年 | 145篇 |
1985年 | 224篇 |
1984年 | 233篇 |
1983年 | 183篇 |
1982年 | 193篇 |
1981年 | 171篇 |
1980年 | 169篇 |
1979年 | 162篇 |
1978年 | 119篇 |
1977年 | 119篇 |
1976年 | 110篇 |
1975年 | 84篇 |
1974年 | 106篇 |
1973年 | 63篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
Review of Accounting Studies - 相似文献
112.
Abstract
Technology analysis is a new technomanagerial discipline that provides common frameworks for analysing individual technologies and their relationships to each other. It is used here to probe the development of a particular technology, namely that of permanent magnets.
The paper traces the development of permanent magnets over the past decade and explores possible future improvements in performance parameters. The strength of magnets (i.e. energy product as expressed in kilo Joules per cubic metre) has increased from approximately 40 in the 1930s to approximately 400 at present.
Future developments will be constrained by a barrier which seems to exist at approximately 525 kilo Joules per cubic metre. However this is viewed as a barrier that can be transcended and not as an immutable limit. It therefore signifies a possible breakthrough zone.
S-curve theory leads analysts to speculate about a possible breakthrough during the five year period leading up to 1995. At that date magnetic strengths of 600+ kilo Joules per cubic metre could be aimed for.
Increased magnetic strength will improve the performance parameters of all technologies utilising magnets, unleash new magnetic based technologies and threaten many traditional areas in the fields of matter processing, transporting and storing, energy processing, and information processing and storing.
These effects will cascade through the entire technological landscape creating new markets and destroying others. The article gives an overview of these impacts on the technological landscape. 相似文献
Technology analysis is a new technomanagerial discipline that provides common frameworks for analysing individual technologies and their relationships to each other. It is used here to probe the development of a particular technology, namely that of permanent magnets.
The paper traces the development of permanent magnets over the past decade and explores possible future improvements in performance parameters. The strength of magnets (i.e. energy product as expressed in kilo Joules per cubic metre) has increased from approximately 40 in the 1930s to approximately 400 at present.
Future developments will be constrained by a barrier which seems to exist at approximately 525 kilo Joules per cubic metre. However this is viewed as a barrier that can be transcended and not as an immutable limit. It therefore signifies a possible breakthrough zone.
S-curve theory leads analysts to speculate about a possible breakthrough during the five year period leading up to 1995. At that date magnetic strengths of 600+ kilo Joules per cubic metre could be aimed for.
Increased magnetic strength will improve the performance parameters of all technologies utilising magnets, unleash new magnetic based technologies and threaten many traditional areas in the fields of matter processing, transporting and storing, energy processing, and information processing and storing.
These effects will cascade through the entire technological landscape creating new markets and destroying others. The article gives an overview of these impacts on the technological landscape. 相似文献
113.
This paper compares the output and revenue effects in the rate-of-return regulated monopoly model. Both the ad valorem and the unit tax generally decrease the use of capital, and as such, reduce the output and raise the price. In addition, it is shown that Suits and Musgrave's conclusion of higher revenue of an ad valorem tax at a given output can apply to a regulated monopolist if the marginal product of labor under the ad valorem tax is greater than or equal to that under the unit tax. Similarly, their second conclusion, that for a given tax revenue an ad valorem tax has a larger output than a unit tax rate before the revenue-maximizing tax rate, can also apply to the regulated monopolist. 相似文献
114.
115.
116.
Constructivist Negotiation Ethics 总被引:1,自引:0,他引:1
The success of Discourse Ethics is premised on the discovery and use of shared values. If this is true what type of negotiation style, especially when used in an intercultural setting, is best suited to make use of shared values. Research focusing on moral arguments between Germans and Americans uncovered an array of shared values. But the existence of shared values, by itself, was not an adequate predictor of a negotiation's success. What did prove to be a predictor of success was the use of a Constructivist style of negotiation by both parties. 相似文献
117.
118.
Based upon a review of the extant literature, it is proposed that the structure of an interorganizational relationship is composed of relationship type and the under‐researched construct of relationship magnitude. Specifically, it is hypothesized that relationship magnitude, a second order construct composed of trust, commitment, and dependence, affects relationship type, which affects the perception of value of the relationship. The results of a survey analyzed through structural equation modeling support these hypotheses. 相似文献
119.
Spatial determinants of Japanese FDI in China 总被引:4,自引:0,他引:4
Research on foreign direct investment in China has spawned an increasingly large literature. Whilst regional cleavages with respect to the distribution of foreign direct investment (FDI) are acknowledged, empirical research on the spatial determinants of FDI in China has been limited. Furthermore, research on the spatial determinants of home country FDI in China has thus far been neglected due to difficulties in accessing the appropriate data. The objective of this paper is to examine the spatial determinants of Japanese direct investment in China by using an econometric model. To that purpose, a dataset is created from the Toyo Keizai directory on the overseas activities of Japanese companies. The results show that tertiary education, inland waterways, as well as coastal location are positive and significant determinants of Japanese investment in China. 相似文献
120.